French window lock



May 20, 1952 N. o. HoLMs'rEN 2,597,583

FRENCH WINDOW LOCK /V. 0, V0/maren /2 /2 /Qfzy May 20, V1952 N. o. HoLMsTEN 2,597,583

FRENCH WINDOW LOCK Filed June 18, 1948 2 SHEETS-SHEET 2 MMV/257% Kd: v B Y l g//f Patented May 20, 1952 UNITED STATES PATENT OFFICE FRENCH WINDOW LOCK Neil 0. Holmsten, New Rochelle, N. Y.

Application June 18, 1948, Serial No. 33,784 a claims. (C1. vii-89)- This invention relates to window latches and more particularly to a window latch for French windows having locking means to prevent unauthorized opening thereof when the window pane is broken.

An object of the invention is to provide a novel and improved window latch of the above type.

Another object is to provide a novel and im proved locking means to be applied to window latches of the above type to prevent unauthorized operation thereof.

Various other objects and advantages will be apparent as the nature of the invention is more particularly disclosed.

The novel features which are characteristic of this invention will be better understood by referring to the following description, taken in connection with the accompanying drawings in which certain specific embodiments thereof have been set forth for purposes of illustration.

In the drawings:

Fig. 1 is a side elevation of a window latch embodying the present invention applied to a pair of French windows;

Fig. 2 is a detail View of the locking clamp therefor;

Fig. 3 is a section taken on the line 3-3 of Fig. 2;

Fig. 4 is a side elevation of a further form of locking device for use in conjunction with standard French window latches;

Fig. 5 is a horizontal section taken on the line 5 5 of Fig. 4;

Fig. 6 is a side elevation of a further form of latching device to be used with a single French window;

Fig. 7 is a vertical section taken on the line 1 1 of Fig. 6;

Fig. 8 is a side elevation of still another form of clamp and lock for a single French window; Fig. 9 is a vertical section taken on the line 9,-9 of Fig. 8; and

Fig. 10 is a horizontal section taken on the line Ill-I0 of Fig. 8 with parts broken away to show the construction thereof;

Referring to the drawings more in detail, the window latch is shown in Figs. 1, 2 and 3 as applied to a pair of swinging type French windows having sashes II, window panes I2 and adapted to be closed against a frame including a central stationary bar I4 which may be made of wood or metal.

Each window sash II carries a latch I5 which is pivoted gthereto by studs I6 and includes a latch arm VI-'I and an actuating handle I8. The

latch arm I'I is adapted to engage the inner surface of the bar I4 for securing the windows in closed position and in the form shown the two latch arms I1 extend horizontally and are in registration when the two latches I 5 are both in latching position with the Windows closed.

The latch arms I'I are shown more in detail in Fig. 10 as being generally E-shaped and as having a cam surface 20 to engage the inner surface of the bar I4 for holding the window in closed position and having spaced slots 2| which are adapted to pass over the edge 22 of the bar I4 for holding the window in partly open positions.

The locking means in accordance with the present invention comprises a clamp 25 (Figs. 1, 2 and 3) having side iianges 2B and having end recesses 2'I adapted to receive the aligned arms I1 of the latches I5 so that the clamp 25 may be positioned over the aligned arms as indicated in Fig. 1. At one end the anges 26 are provided with aligned holes 30 which are adapted to register with one of the slots 2| of the arm I1 when the clamp 25 is in place and are adapted to receive a padlock 3| or the like which, when the clamp 25 is in place, extends through the holes 30 and through the registering slot ZI of the arm I1 so as to prevent removal of the clamp. When the clamp is positioned with the padlock 3| in place as shown (Fig. 1) the latches I 5 cannot be actuated even though the panes I2 may be broken to provide access thereto.

For normal use the clamp 25 and padlock 3l are removed to permit the latches I5 to be actuated in the usual manner. However, when it is desired to lock the window against intruders, vthe clamp 25 and padlock 3I are positioned as above indicated.

In the embodiment shown in Figs. 4 and 5, the window frames and latches are of the type above described and have been given the same reference characters. In this embodiment, however, the clamp and lock comprises a base member 35 which is permanently attached to the sta- A.ing aligned holes 42 to receive a padlock 43 or vLtlie likefor securing the straps 39 in locking .-positin.

In this embodiment, when the straps 39 and padlock 43 are in place, as shown in Figs. 4 and 5, the handles I8 are locked against unauthorized actuation. When the padlock 43 is removed, however, the straps 39 are released to swing about the hinge pins 38 and may thus be opened to release the handles I8 of the latches I5 to permit the latches to be actuated in the usual manner.

It is to be understood of course that this embodiment is suitable for use with latches which are hinged to permit the handles I8 to swing outwardly about an axis parallel to the plane of the window as well as handles which swing about an axis normal to the window as indicated in the drawings.

The embodiments shown in Figs. 6 to -10 are suited for use with single windows having latches similar to those above described, the parts of which are given the same reference numerals.

Referring iirst to Figs. 6 and 7, the latch is 'shown as `comprising 'a base plate 50 which is secured by screws 5I 'to the stationary bar I4 and is provided with an opstanding fear 52 "carrying a hinge flange '53, A strap E4 is provided with a iiange 55 which is hinged 'to the flange 53 by a pin 55 and at its tree end is provided with a U-'shaped clamping section 5?! which is 'adapted to extend over the latch arm ITI of the latch 'i5 when the latter is 'in latching position as shown in Figs. 6 and?.

The U-shaped section 51 is provided with a pair o'f holes 58 which a're .adapted to register with 'one of the slots 2i of the arm 'il when the 'strap is in locking position to receive a padlock 59 which passes through the aligned holes 58 and through the registering slot 21 '.for .securing the latch in locking 'position as indicated. It is to be noted that the vstrap 54 when in locking position covers the rivets 5i so as to prevent Aremoval thereof. When the padlock 5B is removed, however, thc strap 54 is free to be swung out of registration with the arm I1 so as to .permit the latch to be operated vin the usual manner.

Referring now to the embodiment o'f Figs. 8 to 10, a keeper 68 is provided which is similar in section to the arm `II and is provided with iianges GI having holes 62 lto receive attaching Yscrews or rivets for attachment to the stationary bar 14.

The keeper 6) is attached to the 'frame I4h1'1'egistration with the arm 11 of the latch when the latch is in closed position.

The locking means comprises a `clamp 65 which is U-shaped in cross section and is provided with side anges 66 adapted to span the arm Il and the keeper 66 when in aligned position, and with outwardly extending iianges 61 which are adapted to cover the attachment screws 62 of the keeper 66. The flanges 66 are provided with holes E8 registering with holes 65 in the keeper 60 to rceive a padlock 'ill or the like.

In this embodiment, when the clamp 65 is positioned and the padlock ID is secured through the aligned holes 6B and 69, the latch arm I] is prevented from actuation. When :the vpadlock l0 and clamp 65 are removed, however, the latch i5 may be actuated in the usual manner. When in position the flanges 61 prevent removal of the keeper 66.

Although certain specic forms of the invention have been shown, it is to be understood that the invention is not restricted thereto, but that changes and modifications may be made therein as will be readily apparent to a person skilled in the art.

What is claimed is:

1. A lock for a pair of swinging windows adapted to close against a central vertical bar and having aligned latches pivoted thereto, said latches having latch 'arms mounted to 'engage said bar for holding said windows in closed position and in horizontal alignment when said latches are in .latching position, a clamping member having recesses to receive said latch arms and extending over said aligned arms to prevent actuation thereof, `and aligned holes in said clamping member and in one o'f said arms to receive a locking device to prevent removal of said clamping member.

2. A lock for latches for a pair of swinging windows adapted to be closed vaga-inst a central vertical bar, each Window having a latch arm pivoted thereto, said arms having `surfaces to engage said bar for holding 'said windows in closed position and having slots to engage said bar for holding said window in partly -open positions and extending in `horizontal alignment when said latches are .in lat-ching position, and a clam-ping member span-ning -bot-h of said .arms and having recesses to receive the same `and having holes aligned with a slot of one of said arms to receive a locking device for securing said 4clamping member aga-inst unauthorized removal.

3. A locking device for latches fora swinging window adapted to close against a ystationary frame, comprising a latch pivoted to said window having an arm to engage said .frame for holding said window in closed lposition'and when yin latching position extending substantially horizontally, a second arm havin-g a cross section similar to that of said latch arm and positioned yon the frame in horizontal alignment therewith, a U- shaped clamp extending over said latch ar-m and over said second arm to secure said latch arm against movement independently of said second arm, said second arm being xed against movement with said latch arm, said clamp and one of said arms having aligned openings to receive a locking device for preventing removal of said clamp by unauthorized persons.

NEIL O. HOLMS'I'EN.

REFERENCES CITED The following references are of record in the rlle of this patent:

UNITED STATES PATENTS Number Name vDate 1,285,093 Fishel Nov. 19, 1918 1,582,498 Wilkerson Apr. 27, 1926 1,683,649 Belote Sept. '11, 1928 1,850,602 Pneo Mar. 22, 1932 2,107,056 Kistner Feb. l, 1938 FOREIGN PATENTS Number Country Date 802,682 France June 1'3, 1936 

